Mattress frame



l (No Mdel.)

4 C. H. HARD.

MATTRESS FRAME.

. 110.288,431. Patented Nov. 13, 1883.

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.e UNiTnn lSTATES PATENT Ottica.

, CHARLES H. HARD, OF ONEIDA, YORK.

MATTRESS-FRAM E.

SPECIFICATION forming' part of Letters Patent` No. 288,431,datedNovemberfl, 1883.

Application lcd May 23, 1583. (No model.)

To all whom, t may concern:

. Be it known that I, o. H. HARD, of Oneida,

inthe county of Madison and State of New York, have invented certainnewand useful Improvements inMattressFrames; and Ido hereby vdeclare thatthe following is a full, clear, andeXact description thereof, referencebeing had to the accompanying drawings, and to the letters `of referencemarked thereon, Ic which form part of this specificatiomin which-QFigure l is a side elevation of my improved mattressvframe. Fig. 2 islatop View of the same; and Fig. 3 is a section taken longitudinally andvertieallythrough the frame, as indicated by the dottedline x mon Fig.2, showing a bed-bottom stretched from one cross-'bar to the other. y

This invention relates to frames for portable mattresses; and itconsists in a frame which is 2o trnssed` and braced and made very light,at the same time itis very strong, as will be fully understood from` thefollowing description,

when taken in connection with the annexedv drawings.

A A designate the two longitudinal base-bars ofmyimprovedmattress-frame, which may be It will be seen that' I .have lcompoundside bars, each one of which is` entire throughout the length of theframe, and that these bars possess considerablestrength`in fact, greaterstrength than a solid bar would possess, all 4o things being equal.These compound trussed side bars are connected at their ends by means ofcross-bars C C, whichin practice I prefer to Vence of two witnesses.

secure to the ends ofthe said side bars by means of bolts c, which arepassed from above down through the three connected ends of cachangleofthe frame, and through the spreadingblocks, between the base and trussbars, as shown in Fig. l. As the mattress-framel is subjected to great istrain while handling and in transportation, I 5o employ diagonalbraces, which are secured to the head strip or bar, and also to thelongitudinal sprung bars ontrusses B B. These braces will preventracking of the joints at the anglesvof the frame and keep the framesquare. The bowing or springing of the top bars, BB, necessarilyinelines the crossbars C C toward the center of the frame, whichinclination presents two angles, c c, over which the woven-wire or otherfabric is stretched. 6o It will thus be seen that the mattress proper isby reason of the inclination of the crossstrips stretched from thepoints e e, and that e a free play is allowed, which would not be0btained if the cross-strips were horizontal.

- Having thus fully described my invention, ,y what I claim as new, anddesire to secure by Letters Patent, is

The combination, in a mattress-frame, of the longitudinal straight sidebars,l the con- 7o tinuous bowed bars secured on top ofthe side bars atthe middle of theirv length, the end blocks, b, between the ends of thebowed and straight bars, the transverse bars C, and the boltfastenings,all constructed and adapted to operate substantially in the mannerandfor the purposes described. f Y

4In testimony that I claim the foregoing as my own'inventionI affix mysignature in pres- `v GHAS. H. HARD. Witnesses:

E. G. STARK,

T. H. J URDEN.

